The Circular Economy: A Wealth of Flows Where will prosperity come from in a global economy facing rising consumer demands, environmental challenges, volatile resource prices, and the end of easy credit? Ken Webster argues that our linear 'take-make and dispose' economy is a 19th century heritage adrift in the 21st century reality. The time is right to move towards a circular economy - a regenerative model based around feedback-rich flows allied to new business models. The economic advantage lies in designing out waste, enabling access over ownership, using materials in cascading systems and radical resource productivity with the prospect of rebuilding capital and resilience. A circular economy has profound consequences for employment, education, money and finance but also induces a shift in public policy and taxation. The Circular Economy: A Wealth of Flows" gives a stimulating overview of this emerging framework for economic prosperity reinvented. Ken Webster is Head of Innovation at the Ellen MacArthur Foundation, a leading think tank on the circular economy. He is a major contributor to the development and communication of ideas in this field. For this publication Ken has sought contributions from leading experts including colleague Jocelyn Bl riot at the Ellen MacArthur Foundation and Walter Stahel at the Product-Life Institute, Geneva. (c)Ellen MacArthur Foundation 2015 Ellen MacArthur Foundation Publishing Visit www.ellenmacarthurfoundation.org/books-and-reports Summary hebis

This book is written as a textbook on algebraic topology. The first part covers the material for two introductory courses about homotopy and homology. The second part presents more advanced applications and concepts (duality, characteristic classes, homotopy groups of spheres, bordism). The author recommends starting an introductory course with homotopy theory. For this purpose, classical results are presented with new elementary proofs. Alternatively, one could start more traditionally with singular and axiomatic homology. Additional chapters are devoted to the geometry of manifolds, cell complexes and fibre bundles. A special feature is the rich supply of nearly 500 exercises and problems. Several sections include topics which have not appeared before in textbooks as well as simplified proofs for some important results. Prerequisites are standard point set topology (as recalled in the first chapter), elementary algebraic notions (modules, tensor product), and some terminology from category theory. The aim of the book is to introduce advanced undergraduate and graduate (master's) students to basic tools, concepts and results of algebraic topology. Sufficient background material from geometry and algebra is included. Summary hebis